package io.github.dunwu.javacore.jdk8.stream;

import java.util.Arrays;
import java.util.stream.IntStream;
import java.util.stream.Stream;

/**
 * @author Benjamin Winterberg
 */
public class Streams8 {

	public static void main(String[] args) {
		Arrays.asList("a1", "a2", "a3").stream().findFirst().ifPresent(System.out::println);

		Stream.of("a1", "a2", "a3").map(s -> s.substring(1)).mapToInt(Integer::parseInt).max()
			.ifPresent(System.out::println);

		IntStream.range(1, 4).mapToObj(i -> "a" + i).forEach(System.out::println);

		Arrays.stream(new int[] {1, 2, 3}).map(n -> 2 * n + 1).average().ifPresent(System.out::println);

		Stream.of(1.0, 2.0, 3.0).mapToInt(Double::intValue).mapToObj(i -> "a" + i).forEach(System.out::println);
	}

}
